Grease-cup.



E. H. PRESBREY.

GREASE CUP.

APPLICATION FILED JUNE 14, 1913.

1,121,129. Patented Dec. 15, 191 1 Wk? M2523 WITNESSES:

UNITED STATES PATENT OFFICE.

EDWARD I-I. PRESBREY, OF NEW YbRK, N. Y.

GREASE-CUP.

Specification of Letters Patent.

Application filedfl'une l l, 1913. Serial No. 773,584.

E is the outlet, screw-threaded to enter the 7 To all whom it may concern:

Be it known that I, EDWARD H. PRESBREY,

a citizen of the United States, and'a resident of the city, county, and State of New York, have invented certain new and useful Improvements ,in Grease-Cups,f of which the following is a specification.

This invention relates to grease cups in which the two members telescope together by a screw-thread, with acspringstop attached to the cup by a connection which may be fast or loose, working in connection with a pair of slots in the body, so shaped that the spring can turn only in one direction,

and a thumb-screw may fasten the spring to the cup'in such a way that the cup when so fastened cannot turn except in one direction, and cannot turn off; and yet a reverse motion of the thumb-screw may loosen the spring from the cap, so that the cap may turn independent of the spring, and when so loosened may be turned off. The spring and cap may turn together in screwing the cap on, to feed the grease. I

The objects ofmy invention are 1st. To provide a positive lock,to prevent the cup from turning off from the body by the jar of illustrated in the accompanying drawings,

in which- Figure 1 is a vertical section of my complete grease cup. Fig. 2 is a second vertical section at right angles with that of Fig. 1. Fig. 3 is a perspective view of the cap. Fig. i is a perspective view of the body. Fig. 5 is a perspective view of the thumb-screw. Fig. 6 is a perspective view of the split spring washer; and Fig. 7 is a perspective view of the spring; and Fig. 8 is a crosssection of Fig. 1, looking from the bottom up.

A is the cap, screw-threaded on the inside.

B is. the body, screw-threaded on the outside with larger threads, C, than the remainder of the body D, so that the cup may telescope over the. body the full depth of the cup.

oil hole in the bearing to be lubricated.

F is a forked'spring with a flat shoulder;

7', through which is a hole, G, to receive the shank h of the thumb-screw H, having a knob M at its inner end, and the thumbpiece I outside of the cup, by which it may be turned.

The'thumb-screw H is screw-threaded in the hole K, in the cup A, by left-handed threads working in correspondingthreads 1n the hole K, and the threads C within the cup A, and on the outside of the body B. are

right handed.

L is asplit-spring washer between the knobM of the thumb-screw H and thefiat' shoulder f of the spring F. The arms of'the spring F are parallel and turned in opposite directions, so that they may ride out of the;

grooves N in one direction.

The grooves N are on an mchne when Patented Dec. 15, 1914.

engaging the inwardly turned edge of the; I

spring F, and have an abrupt shoulder on the opposite edge, to prevent the spring from passing the grooves in that direction while the incline aids the spring to pass --the grooves in the opposite direction; and these 7 parts are so shaped, in order that the spring when locked to thecap by the thumb-screw H will not permit the cap to be turned off, but will permitit to be screwed on.

O is the interior of the cup, intended to be charged withugrease for the lubrication ofa bearing.

P is the-interior cavityof the body, also charged with grease, connected with the outlet E for the discharge of grease to the bearing. I

The capis preferably made smooth on the outside, so as not easily to be turned by the thumb and finger, nor turned except by the thumb-piece I.

The operation of my improved grease cup is as follows: My improved greasecup' is attached by the screw-threaded outlet E to the oil hole of a bearing upon a motor, for example. Both the cap A and the body B are charged with grease and the cap screwed on to the body'by a few turns of the thumbpiece I suflicient to force the grease in the body B out of the outlet E. Before the cap A is screwed upon the body D, the thumbpiece I'turns the shank h of the thumbscrew H to tighten the spring F and the spring-washer L against the inside of the cup A, so that the cup A and the spring F will'turn together in screwing the cup on to the body, and the arms of the spring will ride over the groovesN and out of them, and both arms of the spring F may come to rest in the grooves N. The cup A cannot turn back, and thus turn off, becausethe arms of the spring on their out-turned edges engage the abrupt sideof the grooves N in turning in that direction. The cap A cannot-be turned off; by an attempt toturn the cap itself, and can onlybe turned offby Y the "ar ms F of the spring remain 'ini'the t-ionfthe jarof itself locks: the cap: fflhe thumb-piece I and screw H will not'turn by togetherthe knob'M anrlithe spring- F, which cannot :tu'rminthat direction; out ofii -the groovesiNe the cap itself may be turned off, butinno other way. If thethumb-screw-I L should happento be left a little loose, so thatthezja'r o'fythe machine would tend to screw" 01f the cap A, it would automatically screw against the knob 'M' and {thus automatically tighten-the spring F and thexcap' A together;

AsT the springfF is in the groovesjNiandc cannot ride out of the; grooves in that directhis 'j arzwith the cap-A, becausethe'spl'it sprin'g washer L, always under someetension, even' when'the thuinbpiece]? isloose', binds grooves.:-- improved grease cup is thus provided withrmeans wherein an abrupt shoulderj-in v thegrooves N"'%enc'ounters"; an ont-turned the cap Ajfandwhen the cap'A', the-spring edge of the spring F,-(Fi-g. 8) such a-man ner that the spring cannot ride out of the groovesN in the directionst'o screw of! F and the thumb-screw H are tight',r and therefore must turntogether, the cap "-A icai1- not 'turn' ofi'a -"'I hespring always turns 'in claim I i i H the direction to screw'the cap-A on, and

nevercan turn in the opposite direction;

and itis; therefore-,zonly when the spring F is freed from thecap A that the cap A may be turned ofi. The cap A cannot be freed from the spring F weucept by turning the* 'thii rfibpiece I in the direction to turn the cap A ofig an d by turning the thumbpiecerin that direction, it first turns a little, independentoi the cap-A and thus loosens the spring from} the cap 'A, so thatthe cap A may turn independent of the spring," thus realize the foregoing I objects insimpl fprm, imparts I Yarious modifications" may be made without departing from the spirit of my invention -,and I have described "my preferred limitations 1 va v Having now described my invention, what 1 claimas new and desire to secur'e'byLet rsPet t-i s s 3 V 4' Ina-"grease cup, a cap and a body havn tlet t ls s n g the ibvj hr ads. e ee ith p g; means to prevent 5 the spring from rotating in a; direction to. sc'rew the capolf, and for o n n and metihe t e s tes,

ith he pe 4 I11 asgrease cup, a cap anda body'having an outlet telescoping together by screw threads, a;."s pring in said capiinea s .ito' prevent the spring from rotating in adirection to'screw the-cap'ofi, a thumh-sc'rewthreaded to tighten itself and the} spring tofthe: cap. whenyturning the cap on, and to loosen the springe fromsthe cap: when the .-I;n w1tness whereof l have hereunto set y hand? at ther tyk u y andyStat or New-Kork, this l2th=day ofsJune, 1913.

Ia P es ncefbf a FRANK EUTEMIA, I

Jenni. B NAQ this patent may be obtainedifor n e em each, by cd qgressigz the f 01pmi sionq 0 Ijat nI-A. A 1 a ,1 3 .w w p m t I};

form asman illustration, andnot way of so A 

